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PC Operating Systems. PC Operating Systems. What’s the difference between Windows and Linux?. PC Operating Systems. PC Operating Systems. PC Operating Systems. IV. PC OSs. A. Windows see chapter 13. PC Operating Systems. 1. historical development. a. 1980s - DOS b. 1990s - Win9X
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PC Operating Systems What’s the difference between Windows and Linux?
PC Operating Systems IV. PC OSs • A. Windows • see chapter 13
PC Operating Systems 1. historical development • a. 1980s - DOS • b. 1990s - Win9X • c. 2000s - Win32
PC Operating Systems 2. architecture • a. hardware support • ring 0 • ring 3
PC Operating Systems 2. architecture b. virtual machines backward compatibility
PC Operating Systems 2. architecture c. structure kernel shell GDI
PC Operating Systems 3. memory management • a. virtual memory
PC Operating Systems IV. PC OSs • B. Palm OS
Sassn2 good examples • Error handling implemented • Default drive letter provided
Sassn2 good comments! • 'PROGRAM REQUIREMENTS: • 'Create a WSH VBScript which displays the total drive size and • 'the free space available based on the drive of the users choice. • 'The information should be displayed in a user friendly manner. • '(ie. information w/in same output window and on separate lines) • 'Also, display one additional line of information regarding the • 'drive to the user - I decided to display the percentage of free • 'space • 'Known Error: If you enter an invalid drive letter the program crashes • 'Error handling needs to be implemented
Sassn2 • Multi-line output (a): • NewLine = Chr(13) & Chr(10) • Msg = msg & NewLine
Sassn2 • Multi-line output (b): • Msg = msg & vbCrLf
Sassn2 • Format output: • FormatNumber(drive.TotalSize/1024,0)
Sassn2 • Useful informaion: • drive.DriveType • but not … serial number
PC Operating Systems Windows System Monitor perfmon
PC Operating Systems perfmon = performance monitor both a troubleshooting and learning tool
PC Operating Systems E. • Comment here …